Panasonic NCR18650B Li-ion battery for quadcopter (Design)

H

Hamish

Member
Hi everyone,

So i was reading up about these new batteries Panasonic NCR18650B Li-ion and people are saying they can increase the flight time of quadcopters by almost 2 fold. The only downside is the C rating is only 2C getting 6.8A max out of a single battery.

I was now going to ask what type of configuration (motors, props, battery configuartion, escs) would get a good flight time out of using one of these and what cell and parallel configuration would one use?

Currently my build configuration is:
-980kv multistar 2213-980
-hobbywing 40A
-5000mah 15c
-f450 frame
-10x4.5

Would it be possible for me to use these batteries in my quadcopter because looking at it to get 60A max discharge which is what my motors can handle then i would need a 3s10p configuration weighing in it 1400g which is to heavy for the design of my Quadcopter.

would anyone be able to help or provide some feedback on what type of deisgns would incorporate this battery and would also achieve great flight time?
 
You don't want to use those batteries, those are just typical, rather old technology 2C flashlight batterries . That they are rated at 3400mAh also means nothing as that is based on a 2.5V cut off at at a <1A drain test. Just like your LiPOs you don't (or actually can't) drag them that low.

Samsung and LG (#1 and #2 in worldwide sales) make true high drain batteries with modern advanced, hybrid chemistry.

I'd think these would be a better choice.

http://www.amazon.com/LG-18650-2500mAh-Rechargeable-Batteries/dp/B00MJ8FFD8
Although they like to label them 35A they are rated for 20A continuous, but they have been tested at 35A.
https://drive.google.com/file/d/0By-7aw3qPc-oa09ENnNFMUtxTFU/preview?pli=1

Samsung are used by most of the high end cordless tool makers.
http://www.amazon.com/Samsung-INR18...3068931&sr=1-22&keywords=Samsung+INR18650-20R

Note they make a 2500mAh version but this one (22a continuous drain rated) seems to do better at higher amp loads.

Both are priced right compared to the Panasonic.

If we use the LG a 3S3p pack will come in at ~396g (just the batteries, shrink and connectors will add a tad more grams) for 7500mAh @ 60A. Going to 3s4p we get ~528g for 10,000mAh @ 80A. The Samsung at 3s4P (same weight) would be 8000mAh @ 88A.

In the real world I imagine the LG and Samsung will perform the same. Here's a 30A continuous drain test.

LG_Sam_30_A.jpg


Might be worth trying.
 
Jackson said:
You don't want to use those batteries, those are just typical, rather old technology 2C flashlight batterries . That they are rated at 3400mAh also means nothing as that is based on a 2.5V cut off at at a <1A drain test. Just like your LiPOs you don't (or actually can't) drag them that low.

Samsung and LG (#1 and #2 in worldwide sales) make true high drain batteries with modern advanced, hybrid chemistry.

I'd think these would be a better choice.

http://www.amazon.com/LG-18650-2500mAh-Rechargeable-Batteries/dp/B00MJ8FFD8
Although they like to label them 35A they are rated for 20A continuous, but they have been tested at 35A.
https://drive.google.com/file/d/0By-7aw3qPc-oa09ENnNFMUtxTFU/preview?pli=1

Samsung are used by most of the high end cordless tool makers.
http://www.amazon.com/Samsung-INR18650-20R-2000mAh-Rechargeable-Batteries/dp/B00R9SDV02/ref=sr_1_22?s=electronics&ie=UTF8&qid=1433068931&sr=1-22&keywords=Samsung INR18650-20R

Note they make a 2500mAh version but this one (22a continuous drain rated) seems to do better at higher amp loads.

Both are priced right compared to the Panasonic.

If we use the LG a 3S3p pack will come in at ~396g (just the batteries, shrink and connectors will add a tad more grams) for 7500mAh @ 60A. Going to 3s4p we get ~528g for 10,000mAh @ 80A. The Samsung at 3s4P (same weight) would be 8000mAh @ 88A.

In the real world I imagine the LG and Samsung will perform the same. Here's a 30A continuous drain test.

LG_Sam_30_A.jpg


Might be worth trying.
Click to expand...
Those being Li-Ion should allow him to discharge past the Lipo limit a little, but how much?
 
Last edited:
I like to inform everyone who is using a quadcopter or a multicopter that I have done numerus tests with the following batteries to see if are able to work with multicopters.
I used INR18650-25R and INR18650HG2 and made 6s2P packs

with the INR18650HG2 I made a 6s2P 6000mAh total of 40amps weight 597g. and with INR18650-25R I made a 6s2P 5000mAh total of 40amps weight 601g.

I used them on my quadcopter
quadcopter weight with batteries 2,042grams
Motors 380kv Tarot
40amp esc
15x5,5 props
DJI Naza

With the INR18650-25R 5,000mAh I flow 20min. and with the INR18650HG2 6,000mAh I fow 21min see, my video at

https://www.youtube.com/watch?v=ev8bWRjJ7k0

with a 6s 5,000mAh Gens battery I fly 11min. 10min less.
after the flight the volts per cell were

3,28v
3,27v
3,27v
3,27v
3,27v
3,27v

then I used two INR18650HG2 6s2P 6000mAh total of 80amps and my quadcopter flow for 30min.
volts per cell after flight.

3,25
3,26
3,26
3,25
3,24
3,25

and

3,25
3,25
3,26
3,27
3,25
3,23

my next test will be with the VTC5 batteries, I will make a 4s4P 10,000mAh weight at 720g 120amps and will use it on my hexacopter see picture.
On my hexa I'm using six 2213/920kv T motors and it weights with out the battery 1,780g.
With a 4s Gens 10,000mAh 25c-50c battery weight is 900g. I fly for 15min.

stay tuned for more tests.

I will be posting the results at www.fpvcrew.gr
 
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